Test Intel i225 PPS output.

[Gwenhael Goavec-Merou]

configuration

sudo /bin/bash
echo 1 > /sys/class/ptp/ptpX/pps_enable
echo 2 0 > /sys/class/ptp/ptpX/pins/SDP0
echo '0 0 0 1 0' > /sys/class/ptp/ptpX/period

where:

• X depends on enumerate order when more than one ptp compatible interfaces are presents.
• Y between 0 and 2

pinout

GND	GND	GND
SDP0	SDP1	SDP2

Ref

• https://community.intel.com/t5/Ethernet-Products/i225-Enable-1-PPS-output-to-ososcilloscope/td-p/1388572

[enjoy-digital]

Since we have two Intel board in the setup, we can just execute each time:

sudo /bin/bash
echo 1 > /sys/class/ptp/ptp0/pps_enable
echo 2 0 > /sys/class/ptp/ptp0/pins/SDP0
echo '0 0 0 1 0' > /sys/class/ptp/ptp0/period
echo 1 > /sys/class/ptp/ptp1/pps_enable
echo 2 0 > /sys/class/ptp/ptp1/pins/SDP0
echo '0 0 0 1 0' > /sys/class/ptp/ptp1/period

[enjoy-digital]

phc2sys commands:

sudo phc2sys -s CLOCK_REALTIME -c /dev/ptp0 -O 0 -m
sudo phc2sys -s CLOCK_REALTIME -c /dev/ptp1 -O 0 -m

[enjoy-digital]

We can now close since documented/integrated in README.